Home / 13,771.04-20,652.87-5,978

Finding the Fourth Proportional to 13,771.04, 20,652.87 and 5,978

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Solution

The fourth proportional to 13,771.04, 20,652.87 and 5,978 is: 8,965.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,771.04 : 20,652.87 = 5,978 : x
  2. Step 2: Convert to fraction form
    13,771.04/20,652.87 = 5,978/x
  3. Step 3: Cross multiply
    13,771.04x = 20,652.87 × 5,978
  4. Step 4: Simplify right side
    13,771.04x = 123,462,856.86
  5. Step 5: Solve for x
    x = 123,462,856.86/13,771.04
  6. Step 6: Final answer
    x = 8,965.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.